using Dinah.Core;

namespace DataLayer;

/// <summary>PDF/ZIP files only. Although book download info could be the same format, they're substantially different and subject to change</summary>
public class Supplement
{
	internal int SupplementId { get; private set; }
	internal int BookId { get; private set; }

	public Book Book { get; private set; }
	public string Url { get; private set; }

#pragma warning disable CS8618 // Non-nullable field must contain a non-null value when exiting constructor. Consider adding the 'required' modifier or declaring as nullable.
	private Supplement() { }
#pragma warning restore CS8618
	public Supplement(Book book, string url)
	{
		ArgumentValidator.EnsureNotNull(book, nameof(book));
		ArgumentValidator.EnsureNotNullOrWhiteSpace(url, nameof(url));

		Book = book;
		Url = url;
	}

	public override string ToString() => $"{Book} {Url.Substring(Url.Length - 4)}";
}